<template>
  <el-tooltip
    :disabled="!titleName"
    class="item"
    popper-class="svgTip"
    effect="dark"
    :content="titleName"
    placement="bottom-start"
  >
    <svg :class="svgClass" aria-hidden="true">
      <use :xlink:href="iconName"></use>
    </svg>
  </el-tooltip>
</template>

<script>
export default {
  name: 'SvgIcon',
  props: {
    iconClass: {
      type: String,
      required: true
    },
    className: {
      type: String
    },
    titleName: {
      type: String
    }
  },
  computed: {
    iconName () {
      return `#icon-${this.iconClass}`
    },
    svgClass () {
      if (this.className) {
        return 'svg-icon ' + this.className
      } else {
        return 'svg-icon'
      }
    }
  }
}
</script>

<style scoped lang="stylus">
.svg-icon {
  width: 1em;
  height: 1em;
  fill: currentColor;
  overflow: hidden;
}
</style>
